ESP8266 Community Forum

- Tue May 30, 2017 6:24 am #66505 I programmed the esp chip using arduino IDE. Now the AT command is not working. Do i have to reflash the firmware for it to work?

- Tue May 30, 2017 2:38 pm #66530 When uploading an Arduino sketch, the AT firmware is gone/erased.
So Yes, you have to upload it again ...

- Tue May 30, 2017 4:06 pm #66539

I programmed the esp chip using arduino IDE. Now the AT command is not working. Do i have to reflash the firmware for it to work?

If you want the AT command firmware back, https://www.allaboutcircuits.com/projects/flashing-the-ESP-01-firmware-to-SDK-v2.0.0-is-easier-now/